figment of one's imagination

Purely invented notion

A figment of one's imagination is something that exists only in the mind—not real, but mistakenly believed or perceived to be.

The phrase typically dismisses or questions whether something actually happened: Was that noise real or just a figment of my imagination?

It can also challenge someone's claims: The conspiracy is a figment of your imagination.

Related

false memory · chimera · smoke and mirrors · fable · tall tale · hallucination · shadow · delusion · pipe dream · pie in the sky · veil · cognitive bias · myth · mist · blur · apparition · fairy tale · haze

Opposites
reality/existence

figment of one's imaginationreality

What actually exists

fact · actuality · truth · real thing · physical reality

epistemic status

figment of one's imaginationverified account

Authenticated social media identity

eyewitness account · historical record · matter of record · empirical evidence · hard evidence

Family

figment, figments, imagination, imaginations, imagine, imagines, imagined, imagining, imaginable

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G